/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: mirac
 * Date: 2025-07-19
 * Time: 19:17
 */
public class Main_9 {
    public static void main(String[] args) {
        String s = " hello,world ";

        System.out.println("[" + s + "]");
        System.out.println("[" + s.trim() + "]");
    }
}
